Fire-door apparatus.



A. G. ELVIN.

FIRE DOOR APPARATUS.

APPLICATION FILED SEPT. 25, |914.

Patented July 11, 1916.

2 SHEETS-SHEET l A. G. ELVIN; l FIR-DOOR APPARATUS. A

APPLICATION FILED SEPT-25.1914* 1 ,1 90,528, l Patented July 11, 1916.

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provenient, a hand lever is provided hai/fing. a curvedv neekportionplvoted tothe frame ALBERT G.. ELVIN, `0F SOMERVILLE, NEW JERSEY.

'Application filed September 25, 1914. Serial N 0.863,451.

To all whom 'it may concern p e Beit knownthat I, Anenn'r G. ELvIN,.a

citizen of' the United States, and-a resident of Smnerviller in thecountyvof Somersetk FIBE-DOOR- APPARATUS.

Speeiieation :3f-Letters Patent.

and State of New Jersey,` have invented' rertain ne W-`anduseful'Improvement in Firedloor ipparatus, of which improvev y ntends'uupward and'outward .iny a plane.` stantlally parallel Withithatcof thedo nient the following is a' specification.

This invention relatesto .apparatus for operating doors of boilerfurnaces, and partieularlyto` iir'e doors for lo've'omotive b'oiln yopening movement' during which the eurjv ers, the principal object,being toprovide an improved combined fluid pressure andhand operateddoor apparatus of the type having a Vertical cylinder andpiston andapair of pivoted l fire doors radapted to ,i wingjlaterally andvertically4 andfto close by. grav-v According to this feature ofniy 'im-.motor wlmreby when the handgleveris swungv downward 'the euriv'e'dportion engages ther pin andjforees the/piston ldownl is afrontelevation of a door` apparatuserd a "front' hodying myfimprovement;Fig. view npona"-largei scale, with "the cover pla te removed and,ayportlongvfof the' ycylinder indicated in section;`-Fig;3, a'plan;Figr.'f4,\

a horizontalsection taken substantially tlnfougrh thepivotpin connectiontothe plsthe. ,pivots of ton; Figo-35, a transverse vertical 'section`taken on the line 5450i Fig.'2`; andFig. 6. a. detail sectionalviewtake'n through the pivot conneetions'of the door Iand linki andshowingg'the lubricating' passages.,

` Aerording tot-he construction shown'v in the drawings, my improveinent'is 'illustrated inr connection with a pairv o1'fdoor's`, 5 and fr".mounted to swingl laterally and ver# tieally upon" the respective pins.r6, and 6?, supported in the door fraxney?, and oper-y ated l v a fluid`pressure motor comprising: a cylinder, 8. having flanges also su i)orted on the pins or bolts, 6 and' (3, and fgontain# in r a piston.v 9,hilureated at its` lower end and eonneeted hy links.I v'I0' and l0, withjdoors.

between the samerand the eurvedfwp r'fullopen position, alatch', 15,`isy`p`rovided 'on the under sidey of the eonerpla. r`r'which is boltedtotheeylinl'er `casinggmat the 'front side for parts. Itop of the latchby means Qffagspringplii ger, 17, mountedinza recess, 18," ing, andbearing against `'thesideoii th ven "Two `other `notches,.lflpandsy'also prorjided"v in rthelateh fori'holdmg the,v` "lever at the'partial and the -full open "tionsy respectively. `The Vedges:offlth'esem "notches are beveled for 'incline"d",Y as isy al. the upperledge* of the lover, thereby p Ifh'old the leveiain the notch when`adjust the under surface'othe curved portion, 13,

Imtlentediflnly gli? the piston', is ektended upon the ,fr0ntlside,through a slot,` U12, in thelower endiofifthe cylinder easingiforengagement witli:thei

` hand lever, v13, kWhichpis provided;,"With` au g `curved neekkportion,*l g andi piyotedefah its 4en dy at lggupon` the eylinderea'sing. f 1nits ',normalvtpositlon, the-hi'i-nldev il 0; and isl adapted-.to beturned*fdonfnwa around the side of the door'v .framminthe Pertim 13%@Hgflsesfh rin, l1', auditives., 4 the piston*downward, `thusopeningwythe O kA 'rollerlmay be mounted! on`...th,e i

end of the pin', 1l, tofdimi'nish-,the if ction ofthelever.` .v y i oFor` thez purpose of holdingy the ham ver' in itsnorr'nal positiono'rfuin partial,

protecting the operatinb The loyer 1s vnormali heldfafthe nthe a ventingthe lever from slippinglo'ut ro y 1 Ating andfpin tjr-,nils o,

y'th rough` j the links.. piston along 10a" and the distanieehetween thecenters of the pins, 1l andlc",l gradually diminishes until the `doorreaches itsfull open position, thus materially increasing the power ofthe hand i lever. In moving the hand lever yfrom its f normalp`osition,` it is first pushed back against the" plunger, 17, toCompress the spring'and release'the lever 'from the latein.

Thenk when the door has been. opened the desir-ed amount, ther lever ispulled forward to, eiigage in either one of the notches.

i W'hen the door is operated in the usual way by mlmittin fluid pressureinto the "c vlinder,- the han lever does not move as t e same is held inits normal position upon the latch bymeans of the spring plunger, 17,Vand the pin, 1l, of the iston merely moves downward away from tlieleverwithout actuating the same.

` Another feature of :my improvement relates to the means forlubricating the piston and the pivots of the doors and links, andcomprises a lubricant chamber, 21, formed in the cylinder easing andhaving passages, 22 and 22a, leadingto the respective doors, andpassage, 23., leading to the cylinder. The door, 5, is provided with aduct, 2l, and a` groove, 35, for feedin oil from passage, 22, to thepivot pins o the door and the link, and door, 5 has a duct, 24a, andgroove, 25, for supplying oil from passage, 22, to its correspondingpivots.` he recess, 18, may also communicate with the passage, 22, forlubricating the plunger, 17. In this Way all of the moving parts arelubricated from a singlechamber.

It 'will now be seen that I liaveiprovided a simple constructioncomprising a oombined lluid pressure and hand operated door apparatus inwhich the piston is positively connected to the door and may be readilyoperated by fluid pressure in the usual. way or manually by the handlever.

lHaving now described my invention, what' I claim as nefw and desire tosecure by Letters Patent is: l

1. In a re door apparatus, the combina. tion of a door adapted to swinglaterally and vertically, a vertical cylinder and piston having apositiveconnecti'on with said door for opening the same by fluidpressure, a pin prolecting from said piston, and a hand lever having acurved portion engaging said pin for manually operating the piston.

2. In a fire door apparatus, the combination of a pairof fire doorspivotecl to swing laterally and vertically, a vertical cylinder andpiston, links connecting the piston with` Madsen said doors, a pinprojecting from the piston,

and a, hand lever-"having a eurvedportion enga-ging said pin formanually operating the piston.

In are door apparatus, the combination ol a. pair of lire doorspivotedto swing laterally and vertically, a'vertical cylinder andpiston, links connecting the piston with said doors, a pin projectingfrom the piston,

and a hand lever pivoted at one end uponl the casing and having a curvedneck por, tion passing over sald pmffor manually de# pressing thepiston.

4.-. In a fire door apparatusrthe combinar` er, a piston having a tionof a door, a eylin positive connection with said door, forfoperatine thesameb fluid )rassure a in rol D 7 jeeting from sai'd piston, and apivoted hand lever having a curved portion engagingA said pin formanually operating the piston, the lever arr'n from the pivot to saidpin diminishing as the lever 1s turned from its normal position wherebythe leverage is increased.

5. In a fire door apparatus, the combination of a pair of fire doorspivoted to swing laterally and vertically, a vertical cylinder andpiston, links connecting the piston with said doors, a lubricant chambercarried by tbecylinder and feed passages leading therefrom to the doors,said doors having feed ducts and grooves communicating with said thepiston.

ALBERT G. ELVIN. Witnesses:

C. E. Fnomive, i EMILY L. MYEns soY

